Note 4 - Uncompleted Contracts (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Cost and Estimated Earnings In Excess of Billings [Table Text Block]

	March 31, 2013			December 31, 2012
Costs incurred on uncompleted contracts	$	10,700,381		$	10,733,663
Estimated earnings		9,855,394			9,465,412
		20,555,775			20,199,075
Billings to date		(17,819,415	)		(17,944,876	)
	$	2,736,360		$	2,254,199

	March 31, 2013			December 31, 2012
Included in accompanying balance sheets under the following captions:
Cost and estimated earnings in excess of billings on uncompleted contracts	$	2,998,875		$	2,730,104
Billings in excess of costs and estimated earnings on uncompleted contracts	$	(262,515	)	$	(475,905	)